Yeah, I noticed I'm no longer glued in position, staring blankly at the bacta tank door.

But wow, ten hours?!

I guess I'll wait until they're down to much less than 50%, before using the tanks. Makes healing your NPCs much more of a crap shoot: pull them out early, and make sure they're safe, or get the mot out of them and run them closer to the "Oh, God, what did I just do?!" threshold.